Rubicon Express RE6200 - Manual (Page 3)

RI6200 Page 3 of 3
TROUBLESHOOTING
DRIVELINE VIBRATION:
In most all cases the factory rear driveshaft cannot be used with this lift. Rear shaft must be converted to CV-style. Install a slip yoke eliminator (SYE) kit
and CV driveshaft. Adjust pinion so it is 2 degrees below parallel with CV driveshaft (see acceleration and deceleration vibration troubleshooting below).
A transfer case drop kit can usually be omitted with a CV driveshaft.
Note, for a temporary solution it may be possible to install the RE2120 transfer case drop kit and buy the RE1822 extended slip yoke (84-95 only, 96
and newer have them) and shim rear pinion up until there is basically no angle at rear driveshaft.
Acceleration vibration: Caused by the pinion being too high in relation to the transfer case output shaft. On leaf sprung vehicles, install axle shims to
lower pinion accordingly.
Deceleration vibration: Caused by the pinion being too low in relation to the transfer case output shaft. On leaf sprung vehicles, install axle shims to
raise pinion accordingly.
HIGH SPEED WOBBLE:
A condition where front tires will shimmy after hitting a bump. Avoid bias ply tires and wheels with excessive offset. Check for worn or loose parts. In
most cases a reduction of positive castor will eliminate this condition. A good rule of thumb is minimum factory caster and maximum factory toe-in.
Always use front sway bar on road.
BUMP STEER:
Caused by improper relationship of drag link and track bar. To correct, center axle again following the instructions supplied with the track bar. Next
determine the neutral position of the steering wheel. Adjust the drag link to center the steering wheel.